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https://issues.apache.org/jira/browse/YARN-1776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13942484#comment-13942484
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Karthik Kambatla commented on YARN-1776:
----------------------------------------

The approach looks reasonable, and changes (except FSRMStateStore) look good to 
me. 

I would prefer someone more familiar with FSRMStateStore also take a look. 

> renewDelegationToken should survive RM failover
> -----------------------------------------------
>
>                 Key: YARN-1776
>                 URL: https://issues.apache.org/jira/browse/YARN-1776
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Zhijie Shen
>            Assignee: Zhijie Shen
>         Attachments: YARN-1776.1.patch, YARN-1776.2.patch, YARN-1776.3.patch
>
>
> When a delegation token is renewed, two RMStateStore operations: 1) removing 
> the old DT, and 2) storing the new DT will happen. If RM fails in between. 
> There would be problem.



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